1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "remoting/protocol/mouse_input_filter.h" 6 7 #include "remoting/proto/event.pb.h" 8 9 namespace remoting { 10 namespace protocol { 11 12 MouseInputFilter::MouseInputFilter() { 13 } 14 15 MouseInputFilter::MouseInputFilter(InputStub* input_stub) 16 : InputFilter(input_stub) { 17 } 18 19 MouseInputFilter::~MouseInputFilter() { 20 } 21 22 void MouseInputFilter::InjectMouseEvent(const MouseEvent& event) { 23 if (input_max_.is_empty() || output_max_.is_empty()) 24 return; 25 26 // We scale based on the maximum input & output coordinates, rather than the 27 // input and output sizes, so that it's possible to reach the edge of the 28 // output when up-scaling. We also take care to round up or down correctly, 29 // which is important when down-scaling. 30 MouseEvent out_event(event); 31 if (out_event.has_x()) { 32 int x = out_event.x() * output_max_.width(); 33 x = (x + input_max_.width() / 2) / input_max_.width(); 34 out_event.set_x(std::max(0, std::min(output_max_.width(), x))); 35 } 36 if (out_event.has_y()) { 37 int y = out_event.y() * output_max_.height(); 38 y = (y + input_max_.height() / 2) / input_max_.height(); 39 out_event.set_y(std::max(0, std::min(output_max_.height(), y))); 40 } 41 42 InputFilter::InjectMouseEvent(out_event); 43 } 44 45 void MouseInputFilter::set_input_size(const webrtc::DesktopSize& size) { 46 input_max_.set(size.width() - 1, size.height() - 1); 47 } 48 49 void MouseInputFilter::set_output_size(const webrtc::DesktopSize& size) { 50 output_max_.set(size.width() - 1, size.height() - 1); 51 } 52 53 } // namespace protocol 54 } // namespace remoting 55
